Well, the Hijri date 13 Shawwal 1285 corresponds to the Gregorian date Tuesday, 26 January 1869. This date lies in the tenth month of the Hijri year 1285 AH, which is Shawwal of 1285 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1285/10/13 is calculated using the Umm Al-Qura calendar and the sighting of the moon. One thing to remember is that this Arabic date may occur on different Gregorian date depending upon the region and country and obviously the moon.
If you are still not sure about the date then you can use our Arabic date converter.
The following is the conversion of the Gregorian date 26 January 1869 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shawwal 1285 AH to its equivalent Gregorian date.
وَتِلْكَ حُجَّتُنَآ ءَاتَيْنَٰهَآ إِبْرَٰهِيمَ عَلَىٰ قَوْمِهِۦ ۚ نَرْفَعُ دَرَجَٰتٍۢ مَّن نَّشَآءُ ۗ إِنَّ رَبَّكَ حَكِيمٌ عَلِيمٌۭ
That is Our argument. We gave it unto Abraham against his folk. We raise unto degrees of wisdom whom We will. Lo! thy Lord is Wise, Aware.
Surah Al-An'aam(6:83)